Quality tests on concretes at development site (likewise called field tests on bond) are conveyed to know the nature of concrete provided at site. It gives some thought regarding concrete quality in view of shading, touch and believe and different tests.
Tests on Cement at Construction site
The accompanying are the quality tests on concrete at development site:
1.Color test
2.Presence of Lumps
3.Concrete Adulteration Test
4.Temperature test
5.Float tests
6.Strength test
7.Setting test
8.Date of packing
1.Color Test of Cement
The shade of the bond ought to be uniform. It ought to be dark shading with a light greenish shade.
2.Presence of Lumps
The bond ought to be free from any hard bumps. Such irregularities are framed by the assimilation of dampness from the environment. Any pack of concrete containing such bumps ought to be rejected.
3.Concrete Adulteration Test
The concrete should feel smooth when touched or rubbed in the middle of fingers. On the off chance that it is felt unpleasant, it shows defilement with sand.
4.Temperature Test of Cement
In the event that hand is embedded in a pack of concrete or stack of bond, it should feel cool and not warm.
5.Float Test
On the off chance that a little amount of bond is tossed in a pail of water, the particles should glide for quite a while before it sinks.
6.Setting Test
A thick glue of concrete with water is made on a bit of glass plate and it is kept submerged for 24 hours. It should set and not break.
6.Setting Test
A thick glue of concrete with water is made on a bit of glass plate and it is kept submerged for 24 hours. It should set and not break.
7.Quality of Cement Test
A piece of concrete 25 mm ×25 mm and 200 mm long is readied and it is drenched for 7 days in water. It is then set on underpins 15cm separated and it is stacked with a weight of around 34 kg. The piece ought not hint at disappointment. The briquettes of a lean mortar (1:6) are made. The span of briquette might be around 75 mm ×25 mm ×12 mm. They are drenched in water for a time of 3 days subsequent to drying. In the event that bond is of sound quality such briquettes won't be broken effectively.
8.Date of Packing
Quality of bond diminishes with time, so it is essential to check the assembling date of the concrete. For the most part, the concrete ought to be utilized before 90 days from the date of assembling.
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